CVE-2024-26784

pmdomain: arm: Fix NULL dereference on scmi_perf_domain removal

Published Apr 4, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:

pmdomain: arm: Fix NULL dereference on scmi_perf_domain removal

On unloading of the scmi_perf_domain module got the below splat, when in
the DT provided to the system under test the '#power-domain-cells' property
was missing. Indeed, this particular setup causes the probe to bail out
early without giving any error, which leads to the ->remove() callback gets
to run too, but without all the expected initialized structures in place.

Add a check and bail out early on remove too.

Call trace:
scmi_perf_domain_remove+0x28/0x70 [scmi_perf_domain]
scmi_dev_remove+0x28/0x40 [scmi_core]
device_remove+0x54/0x90
device_release_driver_internal+0x1dc/0x240
driver_detach+0x58/0xa8
bus_remove_driver+0x78/0x108
driver_unregister+0x38/0x70
scmi_driver_unregister+0x28/0x180 [scmi_core]
scmi_perf_domain_driver_exit+0x18/0xb78 [scmi_perf_domain]
__arm64_sys_delete_module+0x1a8/0x2c0
invoke_syscall+0x50/0x128
el0_svc_common.constprop.0+0x48/0xf0
do_el0_svc+0x24/0x38
el0_svc+0x34/0xb8
el0t_64_sync_handler+0x100/0x130
el0t_64_sync+0x190/0x198
Code: a90153f3 f9403c14 f9414800 955f8a05 (b9400a80)
---[ end trace 0000000000000000 ]---

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-476
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
May 11, 2026, 8:04 PM
Reserved
Feb 19, 2024, 2:20 PM
Status
Analyzed
Published
Apr 4, 2024, 9:15 AM
Modified
Jun 17, 2026, 7:18 AM
Severity
Low
Public date
Apr 4, 2024, 12:00 AM